install_message.rb   [plain text]

# frozen_string_literal: true
require 'rubygems'
require 'rubygems/user_interaction'

##
# A default post-install hook that displays "Successfully installed
# some_gem-1.0"

Gem.post_install do |installer|
  ui = Gem::DefaultUserInteraction.ui
  ui.say "Successfully installed #{installer.spec.full_name}"
end